#2B3FB5#2B3FB5

#2B3FB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.187 H 269.2°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FB5
RGB	rgb(43, 63, 181)
HSL	hsl(231, 62%, 44%)
HSV	hsv(231, 76%, 71%)
CMYK	cmyk(76.2%, 65.2%, 0%, 29%)
CIE-LAB	lab(32.71, 34.53, -64.50)
CIE-LCH	lch(32.71, 73.16, 298.16°)
OKLab	oklab(43.36% -0.0025 -0.1866)
OKLCH	oklch(43.36% 0.187 269.2)
XYZ	xyz(11.1114, 7.4036, 44.5505)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FB5 #B5A12B

analogous

#2B84B5 #2B3FB5 #5C2BB5

triadic

#2B3FB5 #B52B3F #3FB52B

tetradic

#2B3FB5 #B52B84 #B5A12B #2BB55C

square

#2B3FB5 #B52B84 #B5A12B #2BB55C

split-complementary

#2B3FB5 #B55C2B #84B52B

monochromatic

#141D52 #1F2E84 #2B3FB5 #495DD4 #7B89E0

Accessibility & contrast

On white

8.46

#2B3FB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#2B3FB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FB5

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FB5	#FFFFFF	#000000	##FFFFFF
##2B3FB5	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B9

Deuteranopia (green-blind)

#0046B3

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b3fb5;
/* rgb */ color: rgb(43, 63, 181);
/* oklch */ color: oklch(43.4% 0.187 269.2);

Tailwind

colors: {
  custom: {
    50: '#7a74cc',
    500: '#2b3fb5',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fb5;
$custom-light: #7a74cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fb5",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 181
  },
  "hsl": {
    "h": 231.304,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43359,
    "c": 0.18659,
    "h": 269.2
  },
  "luminance": 0.07405
}

Semantic roles & 50–950 ramp

primary

#2B3FB5

secondary

#C8BC74

accent

#CD43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B3FB5

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →